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  • Warning Buzzer

    I have an 1997 C80TLRV 80 horsepower Yamaha outboard. The motor has been running great and I recently, 2 months ago, replaced the water pump as routine maintenance. I have taken the boat out a couple dozen times since I changed the water pump with no issues. I generally only run the motor about 1/2 to 3/4 throttle, however, today I ran full throttle. After about 3 or 4 minutes at full throttle, the warning buzzer sounded. I pulled back to neutral and the buzzer stopped after about 30 or 45 seconds. There was a very strong stream of water coming from the engine. I pulled the engine cover and the engine was cool.

    Any ideas as to why the buzzer sounded?

  • #2
    only thing on that motor to set the alarm and RPM reduction should be the over temp. harder you run a motor the more heat it creates. need to find and disconnect the over temp switch while it is happening to see if that makes it go away to prove it

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